For GM Chevy LS LS1 Engine Valve Spring Compressor & Air Valve Holding Hose Tool. Alluwant-Autoparts LS LS1 Engine Valve Spring Compressor & Air Valve Holding Hose Tool For GM Chevy. 👀 [WIDE APPLICATION] Compatible with LS1, LS2, LS3, LS6, and LSX engines, as well as CTS V alternatives.